Please explain the signature function "Permitted actions after certifying"

Hi everybody,

I hope someone can explain the function "Permitted actions after certifying".

This function is shown then a few guys in my company try to certificate a pdf with a digital signature, but I personally can't simulate this situation. If I try the same, I never see this Option, I only can click "Sign".

In which situation will this be shown? Is it possible to deactivate this function? I'm sorry for asking, but I searched so long in internet, I can't find good informations about this "phenomenon". Thanks a lot.